Back up, on his wages?
Depends on what he wants really.. I don't know the bloke. Does he want to spend his last few years earning a bunch of money and just wait for his retirement, or does he want to kick-start his career again and would gladly choose the best club for that rather than the club that could pay him the best money? In that case it turns more interesting. He is only 28 and has occasionally shown that he is a good or even very good footballer - if he as a person is mature and hungry enough to make the most out of it, I think GP & co would not be entirely against giving him a 1+1 year contract.